Science Instruments:
The four instruments on SORCE are the Total Irradiance Monitor (TIM), the Spectral Irradiance Monitor (SIM), Solar Stellar Irradiance Comparison Experiment (SOLSTICE)
and the Extreme Ultraviolet Photometer System (XPS). TIM, SIM and SOLSTICE will measure solar irradiance and the solar spectrum to help
scientists understand the Sun’s role in climate change. The XPS will measure highenergy radiation from the Sun.